No messages received from google talk on Pidgin

Hi,
I'm using Pidgin 2.4.1 and I've added 3 different account types (hotmail,
yahoo, google talk) which all seem to work fine except google talk. I don't
receive any chat messages from google talk account, nor can I see them in
messages log. While chatting, i can see "X i typing" but nothing is received
on my side.
Am running on Ubuntu 8.
Any help will be appreciated.
--
Wessam Abdrabo
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